Has anybody experienced an H5 0r HS error code on this very popular Inverter. If so how can one get rid of it? Nothing in the manual.

That's not an error. This is a frequently asked question; see FAQ #4.

HS is for master inverter and SL  for slave inverter

Thanks guys,

I tried changing setting 28 to SIG as it suggested but there wasn't the option. It offers me PAL and nothing else.

I also wanted to to change the priority settings on this inverter but Setting 12 is missing from my menu so I dare not. Whats more confusing is I dont have a SOLAR First option I have SUB and SBU Theres no Uti or SOL. 

That's also an FAQ. Per FAQ #3, you have to turn the output switch off before it will let you change the output mode.